Do we need pickler from pytensor?

[ferrine]

Description

I discovered this file but literally do not know we had to deal with it for all the 5 years of my involvement in pymc
https://github.com/pymc-devs/pytensor/blob/5affc30827add3ebe3495d150edf62b782def1db/pytensor/misc/pkl_utils.py

I found it is used in

pytensor/pytensor/compile/function/__init__.py

Line 78 in 5affc30

import pytensor.misc.pkl_utils

Can we just implement a proper __getstate__?

[michaelosthege]

In PyMC we use cloudpickle and that works just fine.

The test_pkl_utils.py is suspiciously short, and pkl_utils wasn't changed much in the past two years.
The ZIP file approach sounds very hackish too..

Maybe remove it?

[ricardoV94]

@ferrine was this removed in #111?

[michaelosthege]

@ferrine was this removed in #111?

No it was not: https://github.com/pymc-devs/pytensor/blob/rel-2.9.0/tests/misc/test_pkl_utils.py